Apparatus for capping hose-sections.



PATENTED APR. 28, 1908.

rs.J-..s'ILL.' ABPARATUSFOR GAPPING HosE SECTIONS.

APPLIDATION FILED JAN. 8. 1908.

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PATENTED APR. 28, 1908.

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APPLIOATIONFILED JAN. B. 1908.

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UNITED STATES PATENT OFFICE.

SAMUEL J. SILL, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF TO HERBERT H.HEWITT,

, OF BUFFALO, NEW YORK.

APPARATUS FOR CAPPING HOSE-SECTIONS.

Spcification ofA Letters Patent.

Patented April 28, 1908.

To all whom it may concern:

Be it known that I, SAMUEL J. SILL, a citizen of the United States,residing at Buffalo, county of Erie7 and State of New York, haveinvented certain new and useful Improvements in Apparatus for CappingHose-Sections, of which I do declare'the following to be a full, clear,and exact description, reference being had to the accompanying drawings,forming part of this specification. v

The present invention has for its object to provide'a machine wherebythe ends of rubber hose sections, such for example as the hose sectionscommonly employed in railway air brake systems, may have their vendscapped or sealed so as to prevent the access of moisture to the textilefabric within the body of the hose.

The invention consists in the features of novelty hereinafter described,illustrated in the accompanying drawings and particularly pointed out inthe claims at the end of this specification.

In the drawings, Figure 1 is a plan view of the improved machine. Fi .2is a side elevation thereof with` parts s own in section. Fig. 3 is anend view of the machine.- Fig. 4 is a cross section on lines 4 4 ofFigs. 1 and 2. Figs. 5 and 6 are enlarged detail sections illustratinthe operation of the machine.

The be upon suitable legs 2. Upon the to of the bed 1 of the machine andpreferab y about its center is placed a block 3 having a semicylindricalgroove or channel 4 extending from end to end thereof. At one side ofthe machine bed rises the vertical standard 5,\

- provided with a suitable stufiing'box through t e which the pistonstem 10 passes. To lower end of the piston stem 10 there is connected ablock or cap 12 that is formed with a semicylindrical cavity 13extending` from end to end thereof and corresponding to the cavity 4 inthe subj acent block 3. The

1 of the machine is supported p erally from the valve stems 34;

cavities 4 and 13 in the blocks 3 and 12 are of such size as tocorrespond substantially to the diameter of the hose sections to becapped.

The cylinder 6- is provided with a valve of suitable constructionwhereby compressed air may be admitted to either side of the piston 11`and a handle 15 extends from this valve in convenient position to begrasped by the operator. At each end of the cavity 4 of the block 3 andsimilarly at each end of the cavity 13 of the block 12 is fixed asemi-circularknife 17 the purpose of which will hereinafter more fullyappear. Compressed air will be admitted to the cylinder 6 by an air pipe18 leading to the valve chamber 7 and air will exhaust from the valvechamber 7 through a pipe 19. The blocks 3 and 12 are designed to holdthe sections of hose while being capped and trimmed and when a hosesection 20 with the mandrel 21 on which it is mounted has been placedwithin the cavity 4 of the lower lblock 3, the operator by shifting thehandle 15 will cause compressed air to so enter the cylinder 6 as toforce downward the piston 11 until the block 12 closes over the hosesection, as clearly shown in Figs. 5 and 6 of the drawings. The cappingand trimming of the ends of the hose section will then be effected bymechanism and in the manner next described.

Upon the top of the bed plate 1 and at each end of the machine ismounted an air cylinder 30 to the valve chambers 31 of which leads apipe 32 for the admission of compressed air or like motive fluid. Fromeach of the valve chambers 31 -will also lead an air exhaust pipe 33.There is a valve of familiar construction within each of the valvechambers 31 such valve being adapted to control the passage ofcompressedair to the opposite ends of lits respective cylinder. The va ve stems 34of these air controlling valves are preferably connected together as bymeans of a link 35 that is pivotally united to the ends of the arms 36which project lat- One of the valve stems 34 is provided with a handle37 extending forwardly into convenient position to be grasped by theoperator. Within each of the cylinders 30 is a piston 40. The stem 41extends throu h a stufling box in the cylinder ca and has xed to itsouter end a block or p unger 45 that is formed with a chamber 46. Thechamber 46 of each of the blocks or plungers 45 is connected by aflexitowards the ends of the hose section.

ble pipe 47 with the air supply pipe 48. In this air supply pipe 48 isplaced a valve chamber 49 that contains a valve which serves to controlthe passage of air' to the chambers 46 of the blocks or plun ers 45. Thestem 50 that projects outward y from the valve chamber 49 has connectedthereto an arm 51 that is held in normal position by a coil spring 52,the lower end of which is connected to the arm 51 while its upper end isconnected to the underside of the table 1. To the outer end of the arm51 is pivotally connected the upper end of a treadle rod 53, the lowerend of which is provided with a treadle 54 in convenient position to bepressed by the operators foot. As shown, each of the chambers 46 of theblocks or lungers 45 is formed with an enlarged eyiindrical groove 55although this is not essential; and the outer end of each of the blocksor plungers 45 is recessed to receive a ring of Babbitt metal 57 withwhich will contact the edges of the knives or cutters 17, these Babbittmetal rings serving to prevent the dulling of the knives. The chambers46 are of sufficient diameter to receive the ends of the mandrel 21 whenthe hose section and its mandrel have been placed in position to becapped as hereinbefore described.

By reference more particularly to Figs. 5 and 6 of the drawings, it willbe seen that when a hose section has been formed and is ready to be caped it comprises an inner tube 22 of unvufanized rubber, a body 23 offrictioned duck or woven fabric and an outer tube or cover 24 ofunvulcanized rubber, both the inner and outer tubes 22 and 24 beingslightly longer than the body portion 23 and the inner tube 22 beingshown as longer than the outer tube 24. When the hose section and themandrel whereon it is mounted have been placed as hereinbefore describedwithin the cavity 4 of the block 3 with the mandrel 21 and the inner andouter tubes 22 and 24 projecting beyond the semi-circular knives 17 atthe endsof the block 4, the operator by shifting the handle 15 willadmit air to the upper end of the cylinder 6 thereby causing the block12 to close down over the hose section resting upon the block 3. He willthen shift the handle 37 so as to admit air to the outer ends of thecylinders 30 thereby causing the blocks or plungers 45 to move As theends of the mandrel 21 enter the chambers 46 in the blocks 45, theoperator will depress the treadle 54 thereby shifting the valve withinthe chamber 49 so as to permit compressed air to pass through the pipes47 to the chambers 46. The compressed air thus passing into the chambers46 will escape through the slight annular space between the ends of themandrel 21 and the wall of the chambers 46 and as the air thus escapesit Will enter the ends of the inner tube 22 with such force as to turnor iiare outwardly the ends of the iin-- ner tube, which being of softunvulcanized rubber are easily expanded, (see F 5). As the ends of theinner tube are thus flared outward, the blocks or plungers 45 completetheir inward movement and in so doing complete the folding over of theends of the inner tube across the ends of the fabric body 23 ol the hoseand into contact with the outer soft rubber tube 24. As the blocks orplungers 45 reach the extreme of their inward movement, thesemi-circular knives 17 cut or trim off the outwardly flared portions ofthe inner tube which project beyond the diameter of the knives; thecompletion of the inward movement of the plungers leaving the knives 17in contact with the Babbitt metal blocks 57 of the plungers, (see F ig.6). The operator will then release the pressure ol` his foot from thetreadle 54 so as to permit the spring 52 to close the valve within thechamber 1U and cut off further admission of air to the chambers 46 andhe will also shift the hand levers 15 and 37 so as to cause the compressed air within the cylinders 6 and 3() re spectively to lift theblock 12 and move outward the plungcrs 45. The mandrel 21 with the hosesection thereon will then be removed and. it will be found that theouter end of the hose section will be securely capped so as to protectthe fabric body 23 against access oi moisture thereto. It will beunderstood of course that when the inner tube 22 has been flared outwardand pressed over the ends oi' the fabric body 23, it will be retained insuoli position because of the adhesive character of the soft rubber. Thehose section is then in condition to be placed upon a vulcanizingmandrel and to be wrapped and submitted to the vulcanizing operation.

It is obvious that the details set forth may be varied without departurefrom the essentials of the invention.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a machine for capping rubber hose, the combination of clampingmeans for holding the hose and the mandrel whereon it is mounted, and amovable block or plunger having an annular end to admit the mandrel andcompress the rubber at the end of the hose.

2. In a machine for capping rubber hose, the combination of clampingmeans for hohling the hose and the mandrel whereon it is mounted and amovable block or plunger having a chambered end to admit the mandrel andcompress the rubber at the end of the hose and means for admitting airunder pressure to the chambered end of the block or plunger.

3. In a machine for capping rubber hose, the combination with clampingmeans for holding the hose and the mandrel whereon it is mounted and amovable block or plunger having an annular end to admit the mandrel andserving to compress the rubber at the end of the hose and4 means forspreading outwardly the inner rubber tube over the end of the hose.

4. In a machine for capping rubber hose, the combination of clampingmeans for holding the hose and the mandrel whereon it is mounted, aknife at the end of said block or plunger, a block at the end of saidclamping means and a movable block or plunger to admit the mandrel andcompress the rubber at the end of the hose against said knife.

5. In a machine for capping rubber hose, the combination of clampingmeans for holding the hose and the mandrel whereon it is mounted, aknife at the end of said clamping means, a plunger having a chamberedend to admit the mandrel and means for admitting air under pressure tosaid chambered end of the plunger in order to spread outwardly the innertube of the hose across the edge of the knife.

6. In a machine for capping rubber hose, the combination of clampingmeans for holding the hose and the mandrel whereon it is mounted, saidmeans comprising separable parts, a sectional knife carried at the, endof said clamping means and a movable block or plunger having a chamberedend to admit the mandrel and having in its end a cavity provided with asofter filling to contact with the knife as the hose is capped.

7. In a machine for capping rubber hose, the combination of clampingmeans for holding the hose and the mandrel whereon it is mounted, acircular knife at the end of said clamping means, a movable block orplunger having a chambered end to admit the mandrel, an air pipe foradmitting compressed air to the chamber of said block or plunger andvalve mechanism for controlling the passage of compressed air to saidchamber.

8. In a machine for ca ping rubber hose, the combination of a stationaryblock and a movable block to coperate with said stationary block inholding the hose, means for shifting said movable block towards and fromthe stationary block,f a block or lunger movable in the direction of thelengt of said stationary block and means for moving said block orplunger towards and from the ends of said stationary and movable blocks.

9. In a machine for capping rubber hose, the combination of clampingmeans for holding the hose and the mandrel whereon it is mounted,movable blocks or plungers adjacent the ends of said clamping means,means for shifting said blocks or plungers back and forth and means foradmltting compressed air to the chambered ends of said blocks orplungers.

10. In a machine for capping rubber hose, the combination of clampingmeans for holding the hose and the mandrel whereon it is mounted, knivesat the ends of said clamping means, chambered blocks or plungers movablymounted adjacent the ends of said clamping means and means for admittingcompressed air to said chambered blocks or plungers. v

SAMUEL J. SILL. Witnesses:

HARRY L. CLAPP, KATHARINE GERLACH.

